from tkinter import *
print ('введите начальную координату х:')
X  = int(input())
print ('введите начальную коордтнату y : ')
Y = int(input())
print ( 'введите кофициэнт увеличение N : ')
N= int (input())
coords = [0,0,10,0,10,10,20,10,20,0,30,0,30,20,0,20]
if N == 0 and X<=500 and Y<=500: pass
else:
     if N>0 and O*N+X>=0 and O*N+Y>=0 and 20*N+X<=500 and 
 20*N+ Y<=500: pass 
   else:
     if N<0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500
and 0*N+Y<=500: pass
      else:
          print('Размер фигуры превышает максимальный размер поля')
          exit ()
root = Tk()
root.title("ИТ марафон")
root.geometry("500x500")
canvas = Canvas (bg="white".capitalize width=500. height=500)
canvas.pack(anchor=CENTER. expand=1)
canvas.create_polygon(coords[0] *N+X. coords[1] *N+Y.
                      coords[2] *N+X. coords[3] *N+Y.
                      coords[4] *N+X. coords[5] *N+Y.
                      coords[6] *N+X. coords[7] *N+Y.
                      coords[8] *N+X. coords[9] *N+Y.
                      coords[10] *N+X. coords[11] *N+Y.
                      coords[12] *N+X. coords[13] *N+Y.
                      coords[14] *N+X. coords[15] *N+Y.)
root.mainloop()
